This is a note to let you know that I've just added the patch titled
gpio: dwapb: drop irq_setup_generic_chip()
to the 3.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
gpio-dwapb-drop-irq_setup_generic_chip.patch
and it can be found in the queue-3.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 11d3d334af07408ce3a68860c40006ddcd343da5 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Date: Mon, 7 Apr 2014 12:13:05 +0200
Subject: gpio: dwapb: drop irq_setup_generic_chip()
From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
commit 11d3d334af07408ce3a68860c40006ddcd343da5 upstream.
The driver calls irq_alloc_domain_generic_chips() which creates a gc and
adds it to gc_list. The driver later then calls irq_setup_generic_chip()
which also initializes the gc and adds it to the gc_list() and this
corrupts the list. Enable LIST_DEBUG and you see the kernel complain.
This isn't required, irq_alloc_domain_generic_chips() did the init.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Tested-by: Alan Tull <delicious.quinoa@xxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: dann frazier <dann.frazier@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpio/gpio-dwapb.c | 3 ---
1 file changed, 3 deletions(-)
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -260,9 +260,6 @@ static void dwapb_configure_irqs(struct
ct->regs.ack = GPIO_PORTA_EOI;
ct->regs.mask = GPIO_INTMASK;
- irq_setup_generic_chip(irq_gc, IRQ_MSK(port->bgc.gc.ngpio),
- IRQ_GC_INIT_NESTED_LOCK, IRQ_NOREQUEST, 0);
-
irq_set_chained_handler(irq, dwapb_irq_handler);
irq_set_handler_data(irq, gpio);
Patches currently in stable-queue which might be from bigeasy@xxxxxxxxxxxxx are
queue-3.15/gpio-dwapb-drop-irq_setup_generic_chip.patch
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